scripts/extract-ikconfig: add xz compression support

Add support for kernels compressed with xz to the extract-ikconfig script.

Signed-off-by: Dick Streefland <dick@streefland.net>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

diff --git a/scripts/extract-ikconfig b/scripts/extract-ikconfig
index 1512c0a..e186242 100755 (executable)
--- a/scripts/extract-ikconfig
+++ b/scripts/extract-ikconfig
@@ -56,10 +56,11 @@ trap "rm -f $tmp1 $tmp2" 0
 dump_config "$img"
 
 # That didn't work, so retry after decompression.
-try_decompress '\037\213\010' xy  gunzip
-try_decompress 'BZh'          xy  bunzip2
-try_decompress '\135\0\0\0'   xxx unlzma
-try_decompress '\211\114\132' xy  'lzop -d'
+try_decompress '\037\213\010' xy    gunzip
+try_decompress '\3757zXZ\000' abcde unxz
+try_decompress 'BZh'          xy    bunzip2
+try_decompress '\135\0\0\0'   xxx   unlzma
+try_decompress '\211\114\132' xy    'lzop -d'
 
 # Bail out:
 echo "$me: Cannot find kernel config." >&2